Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
LNKD
LinkedIn Corporation
LNKD
|
$29.3M |
| 2 |
SPDR Gold Trust
GLD
|
$18.1M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
$14.9M |
| 4 |
Biogen
BIIB
|
$13.7M |
| 5 |
Visa
V
|
$13.3M |
Top Sells
| 1 |
Broadcom
AVGO
|
$37.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
$15.8M |
| 4 |
Citigroup
C
|
$13.9M |
| 5 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
$12.9M |
Sector Composition
| 1 | Communication Services | 12.51% |
| 2 | Healthcare | 12.38% |
| 3 | Technology | 12.22% |
| 4 | Consumer Discretionary | 8.59% |
| 5 | Financials | 8.53% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
CSOD
226
DELISTED
Cornerstone OnDemand, Inc.
CSOD
| $698K | 0.05% |
18,348
+18,261
| +20,990% | +$695K |
|
|
HCR
227
DELISTED
Hi-Crush Inc. Common Stock
HCR
| $694K | 0.05% |
+53,104
| New | +$694K |
|
228
Check Point Software Technologies
CHKP
$20.7B
| $691K | 0.05% |
8,678
-275
| -3% | -$21.9K |
|
|
AMTD
229
DELISTED
TD Ameritrade Holding Corp
AMTD
| $688K | 0.05% |
+24,189
| New | +$688K |
|
230
American Water Works
AWK
$28B
| $686K | 0.05% |
+8,127
| New | +$686K |
|
|
UN
231
DELISTED
Unilever NV New York Registry Shares
UN
| $678K | 0.05% |
14,456
+9,586
| +197% | +$450K |
|
232
Intuit
INTU
$188B
| $676K | 0.05% |
6,062
+5,709
| +1,617% | +$637K |
|
233
Direxion Daily 20+ Year Treasury Bear 3X Shares
TMV
$166M
| $676K | 0.05% |
16,151
+11,906
| +280% | +$498K |
|
234
Silicon Motion
SIMO
$2.8B
| $675K | 0.05% |
14,136
+11,561
| +449% | +$552K |
|
|
APOL
235
DELISTED
Apollo Education Group Inc Class A
APOL
| $667K | 0.04% |
73,158
+43,986
| +151% | +$401K |
|
236
BHP
BHP
$138B
| $662K | 0.04% |
+25,994
| New | +$662K |
|
237
Toronto Dominion Bank
TD
$127B
| $659K | 0.04% |
15,365
-11,735
| -43% | -$503K |
|
238
Carter's
CRI
$1.05B
| $657K | 0.04% |
+6,175
| New | +$657K |
|
239
Sarepta Therapeutics
SRPT
$1.96B
| $654K | 0.04% |
34,308
+4,259
| +14% | +$81.2K |
|
|
CRZO
240
DELISTED
Carrizo Oil & Gas Inc
CRZO
| $654K | 0.04% |
18,258
+7,591
| +71% | +$272K |
|
|
SCG
241
DELISTED
Scana
SCG
| $647K | 0.04% |
8,556
+7,541
| +743% | +$570K |
|
242
PBF Energy
PBF
$3.3B
| $646K | 0.04% |
27,205
+24,263
| +825% | +$576K |
|
243
AerCap
AER
$22B
| $645K | 0.04% |
19,213
+11,623
| +153% | +$390K |
|
244
Barclays
BCS
$69.1B
| $644K | 0.04% |
+90,518
| New | +$644K |
|
245
Skechers
SKX
$9.5B
| $643K | 0.04% |
+21,658
| New | +$643K |
|
|
ESV
246
DELISTED
Ensco Rowan plc
ESV
| $639K | 0.04% |
16,458
+15,751
| +2,228% | +$612K |
|
247
United Parks & Resorts
PRKS
$2.99B
| $636K | 0.04% |
44,451
+33,274
| +298% | +$476K |
|
248
iShares Russell Mid-Cap Value ETF
IWS
$14.1B
| $633K | 0.04% |
8,527
+3,116
| +58% | +$231K |
|
249
Stanley Black & Decker
SWK
$12.1B
| $629K | 0.04% |
+5,663
| New | +$629K |
|
250
Fortuna Silver Mines
FSM
$2.35B
| $628K | 0.04% |
90,072
+84,898
| +1,641% | +$592K |
|